Thermally drawn polycaprolactone fibres with customised cross sections

Farajikhah, Syamak; Rukhlenko, Ivan D.; Stefani, Alessio; Large, M. I.; Chrzanowski, Wojciech; Fleming, Simon

doi:10.1117/12.2541106

Cited by 3 publications

(2 citation statements)

References 6 publications

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“…PCL preforms of 120 mm length were fabricated by melting PCL pellets inside polypropylene and Teflon molds of circular, three-leaf, and four-leaf cross-sectional shapes (all inscribed into a 15-mm diameter circle) at 80 C for 17 hours. PCL fibers were drawn using a fiber draw tower, 31 shown in Figure 1a. The drop-off temperature was set to 90 C (the hot zone temperature inside the furnace was measured to be approximately 52 C) while the subsequent drawing was performed at 85 C (hot zone temperature about 48 C).…”

Section: Fiber Fabricationmentioning

confidence: 99%

Thermally drawn biodegradable fibers with tailored topography for biomedical applications

et al. 2020

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There is a growing demand for polymer fiber scaffolds for biomedical applications and tissue engineering. Biodegradable polymers such as polycaprolactone have attracted particular attention due to their applicability to tissue engineering and optical neural interfacing. Here we report on a scalable and inexpensive fiber fabrication technique, which enables the drawing of PCL fibers in a single process without the use of auxiliary cladding. We demonstrate the possibility of drawing PCL fibers of different geometries and cross‐sections, including solid‐core, hollow‐core, and grooved fibers. The solid‐core fibers of different geometries are shown to support cell growth, through successful MCF‐7 breast cancer cell attachment and proliferation. We also show that the hollow‐core fibers exhibit a relatively stable optical propagation loss after submersion into a biological fluid for up to 21 days with potential to be used as waveguides in optical neural interfacing. The capacity to tailor the surface morphology of biodegradable PCL fibers and their non‐cytotoxicity make the proposed approach an attractive platform for biomedical applications and tissue engineering.

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Section: Fiber Fabricationmentioning

confidence: 99%

Thermally drawn biodegradable fibers with tailored topography for biomedical applications

et al. 2020

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“…We realized for the first time fiber drawn solid and hollow structures made of the biocompatible material PCL. The realized structures have been used to grow cells along the fibers [13].…”

Section: Biocompatible Structures For Cell Growthmentioning

confidence: 99%

Multimaterial and Flexible Devices Made by Fiber Drawing

Stefani

Kuhlmey

Large

et al. 2020

2020 22nd International Conference on Transparent Optical Networks (ICTON)

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The ability to co-process different materials at the same time in a thermal process opens up the possibility of scalable fabrication of volumetric multimaterial and multifunctional devices with operation spanning from the UV to the microwave. Combining optical, mechanical and electronic properties of dielectrics (such as glass and polymers) and metals enables a plethora of applications in radiation manipulation.In this presentation I will discuss the process and the challenges of fiber drawing novel materials and material combinations such as: elastic polymers, biocompatible polymers, arsenic free soft-glasses and combinations of metal-dielectric structures. After discussing the process behind the realization of the novel fibers, I will show some very diverse uses of these exotic materials. I will report on our latest results on flexible fibers in generation of orbital angular momentum, realization of tunable metamaterials and wearable sensors, and I will present some applications of fiber drawn metamaterials for THz radiation.

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Melt polymer drawn single and multi-capillary fibre-based electroosmotic pumps

Farajikhah

Beirne

et al. 2022

Microfluid Nanofluid

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Microfluidic devices have been employed in micro-analytical systems and microelectronics using inexpensive, customisable fluid-handling automation at the microliter scale. Here we utilise a well-established fibre drawing technique, which offers a range of materials and capillary conformations, that can be utilized within microfluidic devices to control fluid movement via electroosmotic processes to produce a simple electroosmotic pump (EOP). Single capillary EOPs were fabricated from drawn PU capillary fibres with internal diameters ranging from 73 to 200 µm and were shown to be capable of actively transporting a buffer solution using an external driving electric potential. A maximum flow rate of 0.8 ± 0.1 μL/min was achieved for a 73 ± 2 µm diameter PU capillary fibre at an applied potential of 750 V/cm. This flow rate was successfully increased up to 5.3 ± 0.3 μL/min by drawing a multi-capillary array consisting of 4, 5 and 7 capillaries.

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Thermally drawn polycaprolactone fibres with customised cross sections

Cited by 3 publications

References 6 publications

Thermally drawn biodegradable fibers with tailored topography for biomedical applications

Thermally drawn biodegradable fibers with tailored topography for biomedical applications

Multimaterial and Flexible Devices Made by Fiber Drawing

Melt polymer drawn single and multi-capillary fibre-based electroosmotic pumps

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